Exercise device



FIG. 1 is a top perspective view of an exercise device, showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 a right side elevation view thereof; and,

FIG. 8 is left side elevation a view thereof.

The broken lines in the figures illustrate portions of the exercise device that form no part of the claimed design. 

CLAIM The ornamental design for an exercise device, as shown and described. 